// Copyright (c) 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef NET_BASE_PLATFORM_MIME_UTIL_H_
#define NET_BASE_PLATFORM_MIME_UTIL_H_

#include <string>
#include <unordered_set>

#include "base/files/file_path.h"

namespace net {

// Encapsulates the platform-specific functionality in mime_util.
class PlatformMimeUtil {
public:
    // See documentation for base::GetPreferredExtensionForMimeType [mime_util.h]
    bool GetPreferredExtensionForMimeType(
        const std::string& mime_type,
        base::FilePath::StringType* extension) const;

    // Adds all the extensions that the platform associates with the type
    // |mime_type| to the set |extensions|.  Returns at least the value returned
    // by GetPreferredExtensionForMimeType.
    void GetPlatformExtensionsForMimeType(
        const std::string& mime_type,
        std::unordered_set<base::FilePath::StringType>* extensions) const;

protected:
    // Get the mime type (if any) that is associated with the file extension.
    // Returns true if a corresponding mime type exists.
    bool GetPlatformMimeTypeFromExtension(const base::FilePath::StringType& ext,
        std::string* mime_type) const;
};

} // namespace net

#endif // NET_BASE_PLATFORM_MIME_UTIL_H_
